Portable grinding and abrading wheel.



PATENTED NOV. 28, 1905.

A. F. JANKOSKI. PORTABLE GRINDING AND ABRADING WHEEL.

APPLICATION FILED DBO, 10, 1904.

WITNESSES ANDREW. a. (mum 00., Puomumocumzns, wnsnmcmm a. c.

UNITED STATES PATENT OFFICE.

ANASTASY F. JANKOSKI, OF DETROIT, MICHIGAN.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed December 10, 1904. Serial No. 236,274.

To all whom it may concern.-

Be it known that I, ANASTASY F. J ANKOSKI, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Portable Grinding and Abrading Wheels; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to portable grinding and abrading wheels.

It has for its object a portable wheel and mechanism for driving the same which is especially intended and adapted for farriers use, the particular purpose of the wheel under con sideration being to grind and sharpen the calks of horseshoes without removing the shoe from the foot of the horse.

In the drawings, Figure 1 is an elevation. Fig. 2 is an enlarged detail of the shaft and its guard. Fig. 3 is an enlarged detail of the wheel and the handle immediately connected with it. Fig. 4 is an enlarged detail view of a portion of the flexible shaft, showing its method of construction.

The driving mechanism is supported by a standard 1, which rests on a base 2- and is provided with bearings .for transverse shafts 4 and 6.- The standard is preferably of tubular iron provided with a slot in which is located a balance-wheel 3 on the shaft 6. Above the balance-wheel in suitable bearings is a transverse shaft 4, on the protruding end of which is a crank 41 and a main driving-Wheel 5, that is connected by a belt to a pulley 61 on the shaft 6. The end of the shaft 6 opposite the pulley 61 is provided with a socket 7, in which engages the end of a flexible shaft 8. The flexible shaft 8 is inclosed in a guard of coiled wire 10, and the coiled-wire guard is covered with a suitable covering 11, of textile material or leather, and the grinding-wheel at the end of the flexible shaft to shift or turn in any desired direction. The flexible shaft itself is composed of short sections 12, of wire, joined by couplings 14. Each section of Wire is composed of a plurality of strands laid in a twist of long pitch, and each end of each section of wire engages in and is secured within the cylindrical coupling 14, which has a diameter to substantially fill the bore of the guard-coil 10. The connecting sections of wire are smaller rule on which is a lug 73.

in diameter and are protected from rubbing contact with the guard-coil by the couplingpieces 14. Adjacent coupling-pieces are connected by links 13, which engage through eyes in the ends of the adjacent .pieces. Terminal pieces protrude from the end of the shaft, one of which is adapted to engage with the axle of the wheel 3. This piece is cylindrical and is inserted in the socket 7 and is held in place by a set-screw 71. The contiguous end of the guard is provided with afer- The lug engages with the forked end of a pivoted finger 72, that prevents the guard and its covering from turning with the shaft. The pivoted finger 7 2 may be easily lifted or swung out of engagement with the lug when it is desired to uncouple the shaft from the driver.

The driving-wheel end of the shaft is provided With a cylindrical terminal which engages through the handle 18, that terminates the guard and engages through the body of the wheel 20. The wheel is secured to it by a nut 21. Between the wheel and the end of the handle is an end-thrust ball-bearing, consisting of balls 16, which travel in a race 19 and support a cap 22, which is also provided with a race. The cap 22 is held in place by a hollow screw-plug 23, that is screwed into the cavity in the end of the handle 18 over the cap 22. A dust-guard 25 is secured to the hub and is provided with a flaring flange that engages closely against the end guard 26 of the handle to prevent'dust and dirt from the abrading-wheel entering the cavity of the thrust-bearing.

The turning of the flexible shaft on its own axis under the action of the driving-wheel 3 and against the resistance which is applied to the grinding-wheel tends to shorten the shaft by increasing the twist of the coiled parts of it and causes an end thrust from the grinding-wheel toward the shaft.

What I claim is 1. In a portable grinding mechanism, in combination with an actuator and a flexible shaft connected therewith, a grinding-wheel actuated thereby, said wheel being mounted with its axis in line with that part of the shaft nearest thereto, a guard for said shaft, a handle on said guard, and a dust-guard attached to the inner edge of the periphery of the grinding-wheel and extending inwardly therefrom over the outer end of the handle and the unprotected portion of the shaft at the end thereof, substantially as described.

IO guard attached to the periphery of the grinding-wheel to the rear of the abrading portion and extending therefrom to the outer portion ofthe handle, substantially as described.

In testimony whereof I sign this specification in the presence of two Witnesses.

ANASTASY F. J ANKOSKI.

Witnesses:

CHARLES F. BURTON, MAY E. KoTT. 

